Press Releases

ZyXEL Embeds Mailshell Engine into ZyWALL Unified Threat Management (UTM) to Provide Complete and Transparent Spam and Phishing Protection SANTA CLARA, CA, Sept. 19, 2005 - Mailshell, the leading OEM provider of anti-spammer and anti-phisher engines, announced today that ZyXEL Communications (TSE:2391), the world's leading broadband access solutions provider and the world's largest DSL router provider, has integrated Mailshell's SpamCompiler technology into its new 8-in-1 ZyWALL unified threat management (UTM). Mailshell's SpamCompiler SDK Lite is the first low-memory anti-spammer and anti-phisher engine and helps ZyWALL UTM offer accurate and reliable spam filtering. More than 6,000 companies and 10 million consumers already rely on 'Powered by Mailshell' products. By integrating Mailshell's SpamCompiler engine, the 8-in-1 ZyWALL UTM optimizes, compiles and executes more than one million filter checks in a fraction of a second to determine if a message is spam or not. By combining a fast, compact, flexible, complete decision tree with an automatically self-tuning intelligent engine that is updated up to every five minutes, Mailshell's engine consistently generates highly accurate results in recognizing spam, phishing and other forms of email fraud. "Spam has become one of the most challenging issues faced by today's IT staffs, as these mails bring down network resources and employee productivity," said Kerming Chen, VP of SMB & Consumer Business Unit at ZyXEL. "Mailshell's solutions are accurate, scalable, and easy to integrate into our ZyWALL UTM products, helping businesses to maximize their bandwidth resources and employee productivity." "Through our scale, experience and focus as an anti-spam technology provider, we can provide our partners a high quality, feature-rich solution at competitive cost and with a short time-to-market," said Tonny Yu, CEO of Mailshell. "Partners can embed anti-spam into their products to generate new incremental subscription-based revenue and to compete with hosted spam filtering services." "Our SDK combines increased flexibility, speed, and transparency compared to managed spam services," added Yu. "Since customers don't need to make changes to their domain records or other essential details of email flow the SDK is also easier to setup and ensures that sensitive email never leaves the customer's servers or gets routed to a third party." About Mailshell SpamCompiler SDK: The SDK Lite boasts the same award-winning accuracy as the flagship Mailshell SDK. The primary differences between the two are memory size and speed. The SpamCompiler SDK Lite requires only 32KB of code on the device, and can be embedded into any product including mobile devices, wireless access points, desktop routers, firewalls, modems, and other low memory devices.. Mailshell's flagship SDK is available in a range of operating systems including Linux, Windows, Solaris (Sparc and Intel), FreeBSD, HP-UX, AIX and Mac OS X. About ZyXEL Communications: ZyXEL Communications Corp. (TSE: 2391), located in Hsinchu, Taiwan, is the world's largest DSL router provider (Gartner, August 2005). ZyXEL's broad line of Internet Protocol-based (IP) networking solutions includes access multiplexors, customer premise equipment, Internet security and Wireless LAN equipment, enabling high-performance network services for SOHO, small to mid-sized businesses and service providers. ZyXEL works closely with worldwide network equipment vendors, telecommunications companies, ISPs, and other major businesses. For more information, visit the company's Website at http://www.zyxel.com. About Mailshell Inc.: Mailshell's software helps its OEM partners, including Computer Associates, Oracle Corporation, CyberGuard, Panda Software, ZyXEL, Broderbund and Lyris Technologies, among others, generate new anti-spam revenue, upsell existing products to new anti-spam customers, and cut anti-spam engineering and support costs to near zero. Companies can integrate the Mailshell Engine into their existing product or application using Mailshell's development toolkit, the Mailshell Anti-Spam SDK. Mailshell is the leading licensor of spam filtering software to OEMs and has more OEM partners with revenues in excess of $50 million than any other company in the world. It is the first and only spam engine in the world with SpamCompiler Technology, which can process more than a million filter checks in a fraction of a second. Mailshell's SpamCompiler developers hold nearly 30 patents in database modeling and design, and are leading experts in using Artificial Intelligence technology to compile high-level languages into optimized code. Via Mailshell's OEM partners, more than 6,000 companies and 10 million consumers worldwide rely on SpamCompiler software to block spam. Mailshell was founded in 1999 and enjoys a100% renewal rate among its OEM customers. For more information: http://www.mailshell.com. # # # Contact: Stefan Pollack, The Pollack PR Marketing Group, (310) 556-4443, spollack@ppmgcorp.com

PC Magazine—Editor's Choice "Mailshell is priceless." "Mailshell is easy to use." One of "the best ways to prevent spam" "Mailshell is excellent." "Mailshell is worth its cost."